To find all the divisors of the number 23,759,925:
- 1. Decompose the number into prime factors.
- See how you can find out how many factors (divisors) the number has, without actually calculating them.
- 2. Multiply the prime factors in all their unique combinations, that yield different results.
1. Carry out the prime factorization of the number 23,759,925:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
23,759,925 = 3 × 52 × 7 × 167 × 271
23,759,925 is not a prime number but a composite one.
- Prime number: a natural number that is divisible (divided evenly) only by 1 and itself. A prime number has exactly two factors: 1 and the number itself.
- Examples of prime numbers: 2 (factors 1, 2), 3 (factors 1, 3), 5 (factors 1, 5), 7 (factors 1, 7), 11 (factors 1, 11), 13 (factors 1, 13), ...
- Composite number: a natural number that has at least one factor other than 1 and itself. So it is neither a prime number nor 1.
- Examples of composite numbers: 4 (it has 3 factors: 1, 2, 4), 6 (it has 4 factors: 1, 2, 3, 6), 8 (it has 4 factors: 1, 2, 4, 8), 9 (it has 3 factors: 1, 3, 9), 10 (it has 4 factors: 1, 2, 5, 10), 12 (it has 6 factors: 1, 2, 3, 4, 6, 12), ...
How to count the number of factors of a number?
Without actually finding the factors
- If a number N is prime factorized as:
N = am × bk × cz
where a, b, c are the prime factors and m, k, z are their exponents, natural numbers, .... - ...
- Then the number of factors of the number N can be calculated as:
n = (m + 1) × (k + 1) × (z + 1) - ...
- In our case, the number of factors is calculated as:
- n = (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 3 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 23,759,925
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- Also consider the exponents of these prime factors.
- Also add 1 to the list of factors (divisors). All the numbers are divisible by 1.
All the factors (divisors) are listed below - in ascending order
The list of factors (divisors):
Numbers other than 1 that are not prime factors are composite factors (divisors).
neither prime nor composite =
1
prime factor =
3
prime factor =
5
prime factor =
7
composite factor = 3 × 5 =
15
composite factor = 3 × 7 =
21
composite factor = 5
2 =
25
composite factor = 5 × 7 =
35
composite factor = 3 × 5
2 =
75
composite factor = 3 × 5 × 7 =
105
prime factor =
167
composite factor = 5
2 × 7 =
175
prime factor =
271
composite factor = 3 × 167 =
501
composite factor = 3 × 5
2 × 7 =
525
composite factor = 3 × 271 =
813
composite factor = 5 × 167 =
835
composite factor = 7 × 167 =
1,169
composite factor = 5 × 271 =
1,355
composite factor = 7 × 271 =
1,897
composite factor = 3 × 5 × 167 =
2,505
composite factor = 3 × 7 × 167 =
3,507
composite factor = 3 × 5 × 271 =
4,065
composite factor = 5
2 × 167 =
4,175
This list continues below...
... This list continues from above
composite factor = 3 × 7 × 271 =
5,691
composite factor = 5 × 7 × 167 =
5,845
composite factor = 5
2 × 271 =
6,775
composite factor = 5 × 7 × 271 =
9,485
composite factor = 3 × 5
2 × 167 =
12,525
composite factor = 3 × 5 × 7 × 167 =
17,535
composite factor = 3 × 5
2 × 271 =
20,325
composite factor = 3 × 5 × 7 × 271 =
28,455
composite factor = 5
2 × 7 × 167 =
29,225
composite factor = 167 × 271 =
45,257
composite factor = 5
2 × 7 × 271 =
47,425
composite factor = 3 × 5
2 × 7 × 167 =
87,675
composite factor = 3 × 167 × 271 =
135,771
composite factor = 3 × 5
2 × 7 × 271 =
142,275
composite factor = 5 × 167 × 271 =
226,285
composite factor = 7 × 167 × 271 =
316,799
composite factor = 3 × 5 × 167 × 271 =
678,855
composite factor = 3 × 7 × 167 × 271 =
950,397
composite factor = 5
2 × 167 × 271 =
1,131,425
composite factor = 5 × 7 × 167 × 271 =
1,583,995
composite factor = 3 × 5
2 × 167 × 271 =
3,394,275
composite factor = 3 × 5 × 7 × 167 × 271 =
4,751,985
composite factor = 5
2 × 7 × 167 × 271 =
7,919,975
composite factor = 3 × 5
2 × 7 × 167 × 271 =
23,759,925
48 factors (divisors)
What times what is 23,759,925?
What number multiplied by what number equals 23,759,925?
All the combinations of any two natural numbers whose product equals 23,759,925.
1 × 23,759,925 = 23,759,925
3 × 7,919,975 = 23,759,925
5 × 4,751,985 = 23,759,925
7 × 3,394,275 = 23,759,925
15 × 1,583,995 = 23,759,925
21 × 1,131,425 = 23,759,925
25 × 950,397 = 23,759,925
35 × 678,855 = 23,759,925
75 × 316,799 = 23,759,925
105 × 226,285 = 23,759,925
167 × 142,275 = 23,759,925
175 × 135,771 = 23,759,925
271 × 87,675 = 23,759,925
501 × 47,425 = 23,759,925
525 × 45,257 = 23,759,925
813 × 29,225 = 23,759,925
835 × 28,455 = 23,759,925
1,169 × 20,325 = 23,759,925
1,355 × 17,535 = 23,759,925
1,897 × 12,525 = 23,759,925
2,505 × 9,485 = 23,759,925
3,507 × 6,775 = 23,759,925
4,065 × 5,845 = 23,759,925
4,175 × 5,691 = 23,759,925
24 unique multiplications The final answer:
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